Letter comments on: Efficacy and safety of BNT162b2 vaccination in solid cancer patients receiving anti-cancer therapy - A single-centre prospective study: Interaction between lymphopenia and anti-SARS-CoV-2 antibodies after two injections of the Pfizer-BioNTech vaccine in patients with cancers treated by chemotherapy or immunotherapy. (January 2022) - Sekkate, Sakina; Stoeklé, Henri-Corto; Mabro, May; Billard, David; Kennel, Titouan; Vasse, Marc; Hervé, Christian; Beuzeboc, Philippe